:root {
    --primary-color: #1e3a8a;
    --secondary-color: #3b82f6;
    --accent-color: #60a5fa;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --info-color: #06b6d4;
    --dark-color: #1f2937;
    --light-gray: #f9fafb;
    --border-color: #e5e7eb;
}

/* Genel Stil İyileştirmeleri */
body {
    font-family: 'Inter', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f3f4f6;
    color: #374151;
}

/* Navbar Modern Stil */
.navbar {
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    padding: 1rem 0;
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.25rem;
    letter-spacing: -0.5px;
}

/* Card Tasarımları */
.card {
    border: none;
    border-radius: 12px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
    margin-bottom: 1.5rem;
}

    .card:hover {
        box-shadow: 0 4px 12px rgba(0,0,0,0.15);
        transform: translateY(-2px);
    }

.card-header {
    background-color: #fff;
    border-bottom: 2px solid var(--primary-color);
    border-radius: 12px 12px 0 0 !important;
    padding: 1.25rem 1.5rem;
    font-weight: 600;
}

/* Modern Tablo Tasarımı */
.table {
    background-color: #fff;
    border-radius: 8px;
}

    .table thead th {
        background-color: var(--primary-color);
        color: white;
        font-weight: 600;
        text-transform: uppercase;
        font-size: 0.875rem;
        letter-spacing: 0.5px;
        border: none;
        padding: 1rem;
    }

    .table tbody tr {
        transition: all 0.2s ease;
    }

        .table tbody tr:hover {
            background-color: #f8fafc;
            transform: scale(1.01);
        }

    .table tbody td {
        vertical-align: middle;
        padding: 1rem;
        border-color: var(--border-color);
    }

/* Modern Butonlar */
.btn {
    border-radius: 8px;
    font-weight: 500;
    padding: 0.625rem 1.25rem;
    transition: all 0.3s ease;
    border: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    box-shadow: 0 2px 4px rgba(30, 58, 138, 0.3);
}

    .btn-primary:hover {
        background: linear-gradient(135deg, #1e40af 0%, #2563eb 100%);
        box-shadow: 0 4px 8px rgba(30, 58, 138, 0.4);
        transform: translateY(-1px);
    }

.btn-outline-primary {
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
}

    .btn-outline-primary:hover {
        background-color: var(--primary-color);
        color: white;
    }

.btn-success {
    background-color: var(--success-color);
}

.btn-danger {
    background-color: var(--danger-color);
}

.btn-sm {
    padding: 0.375rem 0.75rem;
    font-size: 0.875rem;
}

/* Icon Butonları */
.btn-group .btn i {
    font-size: 1rem;
}

/* Sayfa Başlıkları */
h1, h2, h3, h4, h5, h6 {
    color: var(--dark-color);
    font-weight: 700;
}

h2 {
    font-size: 1.875rem;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

    h2 i {
        color: var(--primary-color);
    }

/* Alert Mesajları */
.alert {
    border: none;
    border-radius: 10px;
    padding: 1rem 1.25rem;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.alert-success {
    background-color: #d1fae5;
    color: #065f46;
}

.alert-danger {
    background-color: #fee2e2;
    color: #991b1b;
}

.alert-info {
    background-color: #dbeafe;
    color: #1e40af;
}

/* Form Elemanları */
.form-label {
    font-weight: 600;
    color: var(--dark-color);
    margin-bottom: 0.5rem;
}

.form-control, .form-select {
    border: 2px solid var(--border-color);
    border-radius: 8px;
    padding: 0.75rem 1rem;
    transition: all 0.3s ease;
}

    .form-control:focus, .form-select:focus {
        border-color: var(--primary-color);
        box-shadow: 0 0 0 3px rgba(30, 58, 138, 0.1);
    }

/* Badge */
.badge {
    padding: 0.5rem 0.75rem;
    border-radius: 6px;
    font-weight: 600;
    font-size: 0.75rem;
}

/* Page Header */
.page-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    padding: 2rem 0;
    margin: -1rem -15px 2rem;
    border-radius: 0 0 20px 20px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

/* Stats Cards */
.stat-card {
    background: white;
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    border-left: 4px solid var(--primary-color);
}

    .stat-card h3 {
        font-size: 2rem;
        font-weight: 700;
        color: var(--primary-color);
        margin-bottom: 0.5rem;
    }

    .stat-card p {
        color: #6b7280;
        font-size: 0.875rem;
        margin-bottom: 0;
    }

/* Footer */
.footer {
    background-color: white;
    border-top: 1px solid var(--border-color);
    padding: 1.5rem 0;
    margin-top: 3rem;
}

/* Loading Spinner */
.spinner-border {
    border-color: var(--primary-color);
    border-right-color: transparent;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    color: #9ca3af;
}

    .empty-state i {
        font-size: 4rem;
        margin-bottom: 1rem;
        opacity: 0.5;
    }

/* Responsive */
@media (max-width: 768px) {
    h2 {
        font-size: 1.5rem;
    }

    .table {
        font-size: 0.875rem;
    }
}

/* DataTable Özel Stilleri */
.dataTables_wrapper .dataTables_length select,
.dataTables_wrapper .dataTables_filter input {
    border: 2px solid var(--border-color);
    border-radius: 8px;
    padding: 0.5rem;
}

.dataTables_wrapper .dataTables_paginate .paginate_button.current {
    background: var(--primary-color) !important;
    border-color: var(--primary-color) !important;
    color: white !important;
}
/* Tab Bar */
.tab-bar {
    background: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 100%);
    padding: 0.5rem 1rem 0;
    display: flex;
    gap: 0.25rem;
    overflow-x: auto;
    overflow-y: hidden;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    /*position: sticky;
    /* top: 56px; /* navbar height */
    z-index: 1;
}

    .tab-bar::-webkit-scrollbar {
        height: 4px;
    }

    .tab-bar::-webkit-scrollbar-track {
        background: rgba(255,255,255,0.1);
    }

    .tab-bar::-webkit-scrollbar-thumb {
        background: rgba(255,255,255,0.3);
        border-radius: 4px;
    }

#tabContainer {
    display: flex;
    gap: 0.25rem;
    flex: 1;
}

.tab-item {
    background: rgba(255,255,255,0.15);
    color: rgba(255,255,255,0.9);
    padding: 0.5rem 0.75rem;
    border-radius: 8px 8px 0 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
    font-size: 0.875rem;
    min-width: 120px;
    max-width: 200px;
}

    .tab-item:hover {
        background: rgba(255,255,255,0.25);
    }

    .tab-item.active {
        background: white;
        color: var(--primary-color);
        font-weight: 600;
        box-shadow: 0 -2px 8px rgba(0,0,0,0.1);
    }

.tab-title {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
}

.tab-close {
    background: none;
    border: none;
    color: inherit;
    padding: 0;
    width: 18px;
    height: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    opacity: 0.7;
    transition: all 0.2s ease;
}

    .tab-close:hover {
        opacity: 1;
        background: rgba(0,0,0,0.1);
    }

.tab-item.active .tab-close:hover {
    background: var(--danger-color);
    color: white;
}

/* Tab Actions */
.tab-actions {
    display: flex;
    gap: 0.25rem;
    align-items: center;
    padding-left: 0.5rem;
}

.tab-action-btn {
    background: rgba(255,255,255,0.15);
    border: none;
    color: white;
    width: 32px;
    height: 32px;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
}

    .tab-action-btn:hover {
        background: rgba(255,255,255,0.3);
    }

/* Main content spacing */
body.has-tabs .container-fluid {
    padding-top: 0.5rem;
}
.container-fluid {
    padding-left: 1.5rem !important; /* 4rem'den 1.5rem'e düşür */
    padding-right: 1.5rem !important;
    padding-top: 1rem !important; /* 4rem'den 1rem'e düşür */
}
/* DataTables Düzenleme */
.dataTables_wrapper .dataTables_length,
.dataTables_wrapper .dataTables_filter {
    margin-bottom: 1rem;
}

    .dataTables_wrapper .dataTables_filter input {
        margin-left: 0.5rem;
        padding: 0.375rem 0.75rem;
        border: 2px solid var(--border-color);
        border-radius: 6px;
    }

    .dataTables_wrapper .dataTables_length select {
        padding: 0.375rem 2rem 0.375rem 0.75rem;
        border: 2px solid var(--border-color);
        border-radius: 6px;
        margin: 0 0.5rem;
    }

.dataTables_wrapper .dataTables_info {
    padding-top: 1rem;
    font-size: 0.875rem;
    color: #6b7280;
}

.dataTables_wrapper .dataTables_paginate {
    padding-top: 1rem;
}

    .dataTables_wrapper .dataTables_paginate .paginate_button {
        padding: 0.375rem 0.75rem;
        margin: 0 2px;
        border-radius: 6px;
        border: 1px solid var(--border-color);
    }

        .dataTables_wrapper .dataTables_paginate .paginate_button:hover {
            background: var(--light-gray);
            border-color: var(--primary-color);
        }

        .dataTables_wrapper .dataTables_paginate .paginate_button.current {
            background: var(--primary-color) !important;
            color: white !important;
            border-color: var(--primary-color) !important;
        }

        .dataTables_wrapper .dataTables_paginate .paginate_button.disabled {
            opacity: 0.5;
            cursor: not-allowed;
        }